PROVIDER PROFILE · NPI 1366465304

Johnny ChangMD

PRACTICENOAM M GREENBAUM DDS PCSee all providers at this practice →

Hematology-OncologyEncino, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

4,740

Unique beneficiaries

—

Total services

104,041

Distinct HCPCS

Medicare payment

$951K

Peer benchmark

Total Medicare services vs. 957 Hematology-Oncology providers in CA — top quintile (cohort median 4,173).

PRESCRIBING · PART D · 2024

Total Rx claims

489

Beneficiaries

—

Total drug cost

$1.6M

Distinct drugs

Brand share

41.3%

Top prescribed drugs

Letrozole101 claims

Hydroxyurea78 claims

Ondansetron67 claims

Acalabrutinib Maleate53 claims

Abemaciclib40 claims

QUALITY · MIPS · 2024

Final MIPS score

89.1

Quality

84.8

Cost

73.2

Improvement activities

40.0

Promoting interop.

99.0

Payment adjustment

0.60%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$110K

Payment records

168

By payment type

Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$88K

Travel and Lodging$17K

Food and Beverage$3K

Consulting Fee$2K

REFERRAL NETWORK

Where Johnny Chang's patients come from & go

Directional shared-patient flow from Medicare claims — who sends patients to this provider (inbound) and where this provider's patients go next (outbound). 23 inbound referrers · 44 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Unilab Corporation Clinical Laboratory · West Hills, CA	123	709
Eli Bendavid Diagnostic Radiology · Tarzana, CA	41	180
Jack Chen Diagnostic Radiology · Tarzana, CA	40	208
Prashant Chawla Diagnostic Radiology · Chicago, IL	38	112
Dalia Artal Diagnostic Radiology · Santa Monica, CA	37	126
David Rubenstein Diagnostic Radiology · Tarzana, CA	35	238
Farhad Houriani Diagnostic Radiology · North Hollywood, CA	34	340
PROVIDENCE HEALTH SYSTEM - SOUTHERN CALIFORNIA	23	91
Thomas Ence Pulmonary Disease · Tarzana, CA	21	89
John Cho Internal Medicine · Sylmar, CA	20	289
Shahin Delkhah Internal Medicine · Reseda, CA	18	106
Interscope Pathology Medical Group Clinical Laboratory · Canoga Park, CA	16	52

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
Unilab Corporation Clinical Laboratory · West Hills, CA	216	1,076
TARZANA MEDICAL CENTER LLC	117	1,209
Dalia Artal Diagnostic Radiology · Santa Monica, CA	46	155
Prashant Chawla Diagnostic Radiology · Chicago, IL	38	102
Jack Chen Diagnostic Radiology · Tarzana, CA	37	118
GRITZ, RICHARD	35	208
David Rubenstein Diagnostic Radiology · Tarzana, CA	34	213
Eli Bendavid Diagnostic Radiology · Tarzana, CA	33	135
Farhad Houriani Diagnostic Radiology · North Hollywood, CA	32	305
UNIVERSITY RADIOLOGY NETWORK INC	23	82
Kenneth Chin Diagnostic Radiology · Tarzana, CA	21	48
CEDARS-SINAI MEDICAL CENTER	19	60

Source: CMS Physician Shared Patient Patterns (30-day window, Medicare FFS). Direction = a beneficiary seen by the first provider, then the second, within 30 days; a proxy for referral, not a documented referral. Pairs with fewer than 11 shared beneficiaries are suppressed.

CROSS-REFERENCE

Related data on other Healthparse brands

ProviderScore

OIG/SAM exclusion screening, sanctions history